Combine the ricotta, grated cheese, flour salt and pepper in a large bowl. Mix quickly together with hands until it forms a ball. DO NOT overwork. Pretend that it is hot to the touch. Add a little flour if too sticky. Break out into four balls. On a lightly floured surface, roll into ½ inch thick ropes and cut into 1-inch pieces. Gently roll into small balls on a gnocchi board or on the back of a fork with small tines, and gently push and let each piece slide off. This will give you the traditional oblong shape.